[1] Burnet Inst, Melbourne, Australia
[2] Monash Univ, Sch Rural Hlth, Bendigo, Australia
[3] UNSW Sydney, Kirby Inst, Sydney, Australia
[4] Harm Reduct Victoria, Melbourne, Australia
[5] Monash Univ, Sch Publ Hlth & Prevent Med, Melbourne, Australia
[6] Curtin Univ, Natl Drug Res Inst & Enable Inst, Melbourne, Australia